Table 5.

The predictors of overall awareness of colorectal cancer among the study participants (linear regression) (N=448)

Variable	Univariate linear analysis			Multiple linear regression
	Mean (SD)	Unadjusted difference in mean (95% CI)	P value	Adjusted difference in mean (95% CI)	P value
Age (years)
50–59	9.44 (5.50)	Reference		Reference
60 or more	8.50 (5.54)	−0.94 (−1.97 to 0.09)	0.07	0.33 (−0.74 to 1.41)	0.53
Gender
Male	8.31 (5.80)	Reference		Reference
Female	9.62 (5.19)	1.31 (0.30 to 2.33)	0.01*	2.52 (1.15 to 3.88)	0.001*
Nationality
Qatari	7.30 (5.05)	Reference		Reference
Non-Qatari Arab	9.99 (5.12)	2.68 (1.44 to 3.92)	<0.001*	2.91 (1.64 to 4.18)	<0.001*
Non-Arab	8.72 (6.40)	1.41 (−0.43 to 2.87)	0.05*	1.76 (0.28 to 3.24)	0.02*
Marital status
Married	9.08 (5.63)	Reference		Reference
Unmarried	8.73 (4.84)	0.35 (−1.17 to 1.87)	0.61	−0.62 (−2.13 to 0.88)	0.41
Level of education
No formal education	6.01 (5.34)	Reference		Reference
Primary	9.27 (4.80)	3.25 (1.62 to 4.88)	<0.001*	3.53 (1.85 to 5.23)	<0.001*
Secondary	9.42 (5.21)	3.40 (1.77 to 5.02)	<0.001*	2.97 (1.29 to 4.66)	<0.001*
Tertiary	9.81 (5.74)	3.79 (2.27 to 5.30)	<0.001*	4.10 (2.55 to 5.66)	<0.001*
Employment
Employed	8.56 (5.89)	Reference		Reference
Unemployed	9.47 (5.17)	−0.91 (−1.93 to 0.11)	0.08	0.79 (−0.62 to 2.20)	0.27

Dependent variable: overall awareness mean score. Enter multiple linear regression applied. Model assumption is fulfilled. No interactions and no multicollinearity were detected. R²=14.0%.

*Statistically significant.